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Added 10 days ago
Senior Full Stack Developer (React/Typescript/Node.js)
Affinity
Canada
Full-time
Overview: On behalf of our client, Affinity is seeking an experienced Senior Full Stack Developer to join their engineering team in Canada. This is a full-time opportunity for a seasoned…
Added 11 days ago
Senior Java Software Engineer
Jobility Talent Solutions
Toronto, ON
Contract
Job Title: Java Developer – Capital Markets (eTrading)
Added 11 days ago
Senior Java Software Engineer
TSR Consulting
Mississauga, ON
Contract
We are seeking a highly skilled and passionate Senior Java Backend Developer to join our engineering team as a Senior Individual Contributor. In this role, you will be responsible for…
Added 1 month ago
Sr. DevSecOps Engineer
Rogers Communications
Brampton, ON · Toronto, ON
We are currently seeking a Sr DevSevOps Engineer to join the Rogers Enterprise DevSecOps Engineering Team. Working from Toronto or Brampton office, you will work with the Enterprise DevOps…
Added 11 days ago
Senior Full Stack Software engineer
Affinity
BC · British Columbia, Canada
Full-time
On behalf of our client, Affinity is seeking an experienced Senior Full Stack Developer to join their engineering team in Canada. This is a full-time opportunity for a seasoned engineer who…
Added 11 days ago
Senior Data Engineer
Leni
Toronto, ON
Full-time
The Senior Data Engineer role at Leni is a full-time, hybrid position based in Toronto, ON, with flexibility for partial work from home. In this role, the Senior Data Engineer designs,…
Added 12 days ago
Staff, Site Reliability Engineer(Global Security)
RBC
Vancouver, BC · Halifax, NS · Toronto, ON
Full-time
We are seeking an experienced and hands-on Staff Site Reliability Engineer (SRE) who is passionate about building scalable systems, automating infrastructure, and improving the reliability…
Added 12 days ago
Senior Machine Learning Engineer
RBC
Calgary, AB · Toronto, ON
Full-time
We are seeking a talented Senior Machine Learning Engineer to join our AI & Innovation team at Royal Bank of Canada. In this role, you will drive the development and deployment of…
Added 12 days ago
Staff, Site Reliability Engineer(Global Security)
Royal Bank of Canada
Vancouver, BC · Halifax, NS · Toronto, ON
Full-time
We are seeking an experienced and hands-on Staff Site Reliability Engineer (SRE) who is passionate about building scalable systems, automating infrastructure, and improving the reliability…
Added 12 days ago
Senior Machine Learning Engineer
Royal Bank of Canada
Calgary, AB · Toronto, ON
Full-time
We are seeking a talented Senior Machine Learning Engineer to join our AI & Innovation team at Royal Bank of Canada. In this role, you will drive the development and deployment of…
Added 11 days ago
Offensive Security Engineer
Epsilon Solutions Ltd.
Toronto, ON
Contract
As “Principal Consultant, Agentic AI Cybersecurity Engineer” you will work hands-on alongside our cybersecurity engineering and application security teams to build, operate, and advance the…
Added 11 days ago
Ingénieur(e) solutions
ChapsVision
Montreal, QC
Full-time
En fonction de votre expérience, vous jouerez soit un rôle clé, soit celui de responsable technique senior dans le cadre de mises en œuvre stratégiques : vous concevrez des solutions,…
Added 11 days ago
Senior Machine Learning Engineer
RBC
Toronto, ON
Full-time
We are seeking a talented Senior Machine Learning Engineer to join our AI & Innovation team at Royal Bank of Canada. In this role, you will drive the development and deployment of…
Added 11 days ago
Senior Core Java Engineer
J&M Group
Montreal, QC
Contract
We are seeking a Senior Core Java Engineer to design, develop, and support high-performance, scalable enterprise applications. The ideal candidate will have strong expertise in Core Java,…
Added 26 days ago
Staff Software Engineer
Open People Network (OPN)
Toronto, ON
Full-time
Senior product leadership. Less about the technical work at this point and more about whether you’re someone we want in the room: how you collaborate, how you handle disagreement, and…
Added 12 days ago
Senior Software Engineer
Questrade Financial Group
Toronto, ON
We’re looking for our next Senior Software Engineer. Could It Be You?
Added 11 days ago
Sr Integration Engineer (Intelligent Automation)
Russell Tobin
Toronto, ON
$90 to $100 CAD / hour
Contract
Position: Sr Integration Engineer (Intelligent Automation)
Added 11 days ago
Node JS / NestJS Engineer (Backend)
BeachHead
Markham, ON
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Working with one of our top financial clients, this role calls for a Node JS / NestJS Engineer (Backend). This position involves developing backend capabilities and APIs for a key…
Added 11 days ago
Senior Software Engineer
Tactable
Toronto, ON
Full-time
The Role: Senior Software Engineer (Cloud, Data & APIs)
Added 11 days ago
Senior Software Engineer
Mohawk Medbuy Corporation
Toronto, ON · Greater Toronto Area, Canada
Full-time
We are currently recruiting for a Senior Software Engineer to support our IT – Application Development team. This role can be based out of our Toronto, London or Burlington offices.
Added 12 days ago
IT - Senior Software Engineer
Mohawk Medbuy Corporation (MMC)
Burlington, ON · London, ON · Toronto, ON
We are currently recruiting for a Senior Software Engineer to support our IT – Application Development team.
Added 12 days ago
Senior Software Engineer -Waterloo
PointClickCare
Kitchener, ON
Full-time
· Experience writing clean code that performs well at scale using Java
Added 11 days ago
Développeur Senior SRE
Astek
Montreal, QC
Full-time
Senior Developer SRE "Site Reliability Engineer"
Added 11 days ago
Senior Software Engineer -Waterloo
PointClickCare
Waterloo, ON
$142,000 to $158,000 CAD / year
Full-time
Experience writing clean code that performs well at scale using Java
Added 11 days ago
Senior Software Quality Engineer – AI
PeoplePilot
Toronto, ON
Full-time
We are seeking a Senior Software Quality Engineer – AI Focused to drive quality, reliability, and automation for AI-enabled software products. The role will collaborate with Development,…

Epsilon Solutions Ltd.

Offensive Security Engineer

Toronto, ON, Canada

Job type: Contract
Apply by: Oct 15, 2026
Posting language: English
Posted: Sep 15, 2026

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Original job description

Role: Offensive Security Engineer

Toronto, Hybrid

Job Description

As “Principal Consultant, Agentic AI Cybersecurity Engineer” you will work hands-on alongside our cybersecurity engineering and application security teams to build, operate, and advance the agentic AI systems that find, exploit, and remediate vulnerabilities end-to-end across our application and infrastructure estate. Operating at a principal engineer level, you will personally direct frontier AI models do discover vulnerabilities in production code, develop proof-of-concept exploits, generate and validate fixes, and integrate them into CI/CD pipelines with safe human-in-the-loop controls. You will also build reusable AI skills, prompts, and tooling that make agentic vulnerability management efficient and scalable across the estate. You will bring deep dual expertise across offensive and defensive security, penetration testing, and software engineering, and apply that fluency to push the boundaries of what is possible with agentic AI in a regulated enterprise environment.

What will you do?

Architect and operationalize the end-to-end agentic AI patching pipeline spanning detection, fix generation, automated testing, and release across SAST, DAST, SCA, IAST, container, and server vulnerabilities.
Use frontier AI models to discover novel vulnerabilities in production application and infrastructure code, develop proof-of-concept exploits, and validate that AI-generated fixes close the underlying root cause.
Build and maintain the library of reusable AI skills, prompts, evaluation harness, and tooling that power agentic vulnerability discovery, triage, remediation, false positive analysis, and exemption workflows at scale.
Design and operationalize AI-driven false positive analysis and exemption processes to reduce manual triage burden and surface only actionable findings to development teams.
Conduct hands-on penetration testing and red team exercise against critical applications and infrastructure to validate defensive controls and agent-generated remediations.
Extend agentic remediation coverage across SAST, SCA, DAST, IAST, container, and server vulnerabilities, including the data and tooling needed to connect findings back to source.
Design agent prompting, guardrails, evaluation frameworks, and appropriate human-in-the-loop controls to ensure safe autonomous code changes, testing, and deployment.
Drive integration of agentic remediation into enterprise CI/CD pipelines (Github, Jenkins, etc.) across the deployment landscape.
Communicate technical design, risk trade-offs, and delivery progress clearly to senior stakeholders including CIO, CISO, 2LOD, and Audit functions.

Must-have:

10+ years hands-on experience across software engineering, offensive security, and defensive security at a principal engineer level, with demonstrated personal contributions to production codebases and published vulnerability research or penetration testing engagements.
Advanced technical proficiency in multiple programming language (Java, C#, C, C++, Python, JavaScript/TypeScript, .NET, Go) with proven ability to personally write, review, and remediate production code.
Deep fluency in vulnerability classes including memory safety, injection authentication and authorization flaws, cryptographic misuse, deserialization, race conditions, and supply chain attacks, with hands-on experience finding and exploiting each.
Extensive hands-on experience with penetration testing, red teaming, exploit development, reverse engineering, and secure code review against OWASP Top 10 and SANS 25, combined with defensive engineering experience building detection and remediation capabilities.
Extensive hands-on experience with application security testing tools (SAST, DAST, IAST, SCA), including tuning, false positive analysis, exemption workflow design, and enterprise vulnerability management at scale.
Deep technical fluency with agentic AI coding tools and frameworks (Claude, Devin, Copilot, Windsurf, Cursor, MCP, including prompt engineering, agent orchestration, reusable skill and tool design, guardrail design, and evaluation.
Strong architectural knowledge of modern CI.CD, container platforms (Docker, Kubernetes), cloud-native deployment patterns, and integration of security automation into developer workflows.

Nice-to-have:

Relevant security certifications (OSCP, OSCE, OSEP, GXPN, GWAPT, CISSP, or equivalent).
Experience in financial services or highly regulated industries with exposure to SOX, SOC1, and regulatory audit.
Public evidence of offensive capability: published CVEs, bug bounty track record, conference talks (DEFCON, Black Hat, Offensive Con, Recon), CTF placements, or open-source security tooling contributions.
Hands-on experience with enterprise vulnerability tooling (Tenable, Aqua, Snyk, BrightSec) and remediation at scale.
Demonstrated ability to advise senior technology leaders and deliver within complex, multi-stakeholder enterprise environments.

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More about this job

Responsibilities

Architect and operate agentic AI systems to automate the end-to-end discovery, exploitation, and remediation of vulnerabilities across application and infrastructure estates. Conduct hands-on penetration testing and red team exercises to validate defensive controls and AI-generated fixes.

Requirements

Requires over 10 years of experience in software engineering and offensive/defensive security at a principal level. Must possess deep proficiency in multiple programming languages and extensive experience with AI coding tools and application security testing frameworks.

Skills

Offensive Security
Agentic AI
Penetration Testing
Software Engineering
Vulnerability Management
Red Teaming
Exploit Development
Secure Code Review
SAST
DAST
SCA
IAST
Prompt Engineering
CI/CD Integration
Reverse Engineering
Cloud-Native Security

Visa sponsorship

Not detected in the job text

Keywords

Agentic AI
Offensive Security
Penetration Testing
Red Teaming
Java
C#
C++
Python
JavaScript
TypeScript
.NET
Go
OWASP Top 10
SANS 25
SAST
DAST
IAST
SCA
Claude
Devin
Copilot
Windsurf
Cursor
MCP
Docker
Kubernetes
Github
Jenkins
OSCP
OSCE

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